oj.uz

답안 #298889

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
298889 2020-09-14T09:22:23 Z toloraia Power Plant (JOI20_power) C++14
100 / 100
 264 ms 28280 KB 
#include <bits/stdc++.h>
#define F first
#define S second
#define mp make_pair
#define pb push_back
//#define ll __int128
#define ll long long
#define int long long
#define LEFT(a) ((a)<<1)
#define RIGHT(a) (LEFT(a) + 1)
#define MID(a,b) ((a+b)>>1)
#define MAX(a,b) ((a)>(b)?(a):(b))
#define MIN(a,b) ((a)<(b)?(a):(b))
#define y1 y122
/*
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")
/*
#pragma GCC optimize ("O3")
#pragma GCC optimize("Ofast")

#pragma GCC target("avx2,fma")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC target ("avx2")
#pragma GCC optimization ("unroll-loops")

#pragma comment(linker, "/STACK: 20000000005")
*/

using namespace std;

const int N = 200005;

int n, ans;
int c[N];
int dp[N], DP[N];
vector < int > g[N];

void dfs (int k, int p){
    for (int to : g[k]){
        if (to == p)
            continue;
        dfs (to, k);
        dp[k] += dp[to];
    }
    dp[k] = max (dp[k] - c[k], c[k]);
}

void go (int k, int p, int X){
    int sum = 0;
    ans = max (ans, c[k] + X);
    for (int to : g[k]){
        if (to == p)
            continue;
        sum += dp[to];
        ans = max (ans, c[k] + dp[to]);
    }
    sum += X;
    ans = max (ans, sum - c[k]);
    for (int to : g[k]){
        if (to == p)
            continue;
        sum -= dp[to];
        int mx = max (c[k], sum - c[k]);
        go (to, k, mx);
        sum += dp[to];
    }
}

main()
{
    //freopen ("in.in", "r", stdin);freopen ("out.out", "w", stdout);
    ios_base::sync_with_stdio(0);
    cin >> n;
    for (int u, v, i = 1; i < n; i++){
        cin >> u >> v;
        g[u].pb (v);
        g[v].pb (u);
    }
    char ch;
    for (int i = 1; i <= n; i++){
        cin >> ch;
        c[i] = ch - '0';
        c[0] += c[i];
    }
    if (c[0] >= 2)
        ans = 2;
    else
        ans = c[0];
    dfs (1, 0);
    go (1, 0, 0);
    cout << ans << endl;
}

Compilation message

power.cpp:19:1: warning: "/*" within comment [-Wcomment]
   19 | /*
      |  
power.cpp:71:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   71 | main()
      |      ^

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 5 ms 4992 KB Output is correct
21 Correct 5 ms 4992 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 5 ms 4992 KB Output is correct
21 Correct 5 ms 4992 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 5 ms 5120 KB Output is correct
24 Correct 5 ms 5120 KB Output is correct
25 Correct 5 ms 5120 KB Output is correct
26 Correct 5 ms 5120 KB Output is correct
27 Correct 5 ms 5120 KB Output is correct
28 Correct 5 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 5 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 5 ms 5248 KB Output is correct
33 Correct 5 ms 5120 KB Output is correct
34 Correct 5 ms 5120 KB Output is correct
35 Correct 5 ms 5248 KB Output is correct
36 Correct 5 ms 5120 KB Output is correct
37 Correct 5 ms 5120 KB Output is correct
38 Correct 5 ms 5120 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 5 ms 5248 KB Output is correct
41 Correct 5 ms 5248 KB Output is correct
42 Correct 5 ms 5248 KB Output is correct
43 Correct 5 ms 5120 KB Output is correct
44 Correct 5 ms 5376 KB Output is correct
45 Correct 4 ms 5248 KB Output is correct
46 Correct 5 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 5 ms 5248 KB Output is correct
49 Correct 5 ms 5248 KB Output is correct
50 Correct 5 ms 5248 KB Output is correct
51 Correct 5 ms 5248 KB Output is correct
52 Correct 5 ms 5120 KB Output is correct
53 Correct 5 ms 5248 KB Output is correct
54 Correct 5 ms 5248 KB Output is correct
55 Correct 5 ms 5248 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 5 ms 5248 KB Output is correct
61 Correct 5 ms 5248 KB Output is correct
62 Correct 5 ms 5376 KB Output is correct
63 Correct 5 ms 5120 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 5 ms 4992 KB Output is correct
21 Correct 5 ms 4992 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 5 ms 5120 KB Output is correct
24 Correct 5 ms 5120 KB Output is correct
25 Correct 5 ms 5120 KB Output is correct
26 Correct 5 ms 5120 KB Output is correct
27 Correct 5 ms 5120 KB Output is correct
28 Correct 5 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 5 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 5 ms 5248 KB Output is correct
33 Correct 5 ms 5120 KB Output is correct
34 Correct 5 ms 5120 KB Output is correct
35 Correct 5 ms 5248 KB Output is correct
36 Correct 5 ms 5120 KB Output is correct
37 Correct 5 ms 5120 KB Output is correct
38 Correct 5 ms 5120 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 5 ms 5248 KB Output is correct
41 Correct 5 ms 5248 KB Output is correct
42 Correct 5 ms 5248 KB Output is correct
43 Correct 5 ms 5120 KB Output is correct
44 Correct 5 ms 5376 KB Output is correct
45 Correct 4 ms 5248 KB Output is correct
46 Correct 5 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 5 ms 5248 KB Output is correct
49 Correct 5 ms 5248 KB Output is correct
50 Correct 5 ms 5248 KB Output is correct
51 Correct 5 ms 5248 KB Output is correct
52 Correct 5 ms 5120 KB Output is correct
53 Correct 5 ms 5248 KB Output is correct
54 Correct 5 ms 5248 KB Output is correct
55 Correct 5 ms 5248 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 5 ms 5248 KB Output is correct
61 Correct 5 ms 5248 KB Output is correct
62 Correct 5 ms 5376 KB Output is correct
63 Correct 5 ms 5120 KB Output is correct
64 Correct 217 ms 18232 KB Output is correct
65 Correct 215 ms 18168 KB Output is correct
66 Correct 218 ms 18168 KB Output is correct
67 Correct 217 ms 18172 KB Output is correct
68 Correct 215 ms 18168 KB Output is correct
69 Correct 213 ms 18168 KB Output is correct
70 Correct 218 ms 18168 KB Output is correct
71 Correct 216 ms 18296 KB Output is correct
72 Correct 216 ms 18168 KB Output is correct
73 Correct 244 ms 27260 KB Output is correct
74 Correct 248 ms 27256 KB Output is correct
75 Correct 217 ms 19448 KB Output is correct
76 Correct 237 ms 19576 KB Output is correct
77 Correct 226 ms 18168 KB Output is correct
78 Correct 264 ms 18296 KB Output is correct
79 Correct 229 ms 18168 KB Output is correct
80 Correct 225 ms 18168 KB Output is correct
81 Correct 177 ms 18284 KB Output is correct
82 Correct 201 ms 18160 KB Output is correct
83 Correct 233 ms 22392 KB Output is correct
84 Correct 233 ms 23928 KB Output is correct
85 Correct 233 ms 23672 KB Output is correct
86 Correct 232 ms 19320 KB Output is correct
87 Correct 235 ms 18936 KB Output is correct
88 Correct 216 ms 18936 KB Output is correct
89 Correct 218 ms 18936 KB Output is correct
90 Correct 212 ms 18808 KB Output is correct
91 Correct 246 ms 18936 KB Output is correct
92 Correct 211 ms 19232 KB Output is correct
93 Correct 220 ms 20844 KB Output is correct
94 Correct 194 ms 22124 KB Output is correct
95 Correct 194 ms 21224 KB Output is correct
96 Correct 204 ms 19880 KB Output is correct
97 Correct 210 ms 18680 KB Output is correct
98 Correct 206 ms 18452 KB Output is correct
99 Correct 211 ms 18296 KB Output is correct
100 Correct 211 ms 20600 KB Output is correct
101 Correct 200 ms 18936 KB Output is correct
102 Correct 203 ms 18424 KB Output is correct
103 Correct 216 ms 18448 KB Output is correct
104 Correct 125 ms 18832 KB Output is correct
105 Correct 247 ms 24824 KB Output is correct
106 Correct 130 ms 18660 KB Output is correct
107 Correct 122 ms 18660 KB Output is correct
108 Correct 250 ms 27948 KB Output is correct
109 Correct 120 ms 18820 KB Output is correct
110 Correct 246 ms 28280 KB Output is correct
111 Correct 212 ms 18168 KB Output is correct